30 Nov
2005
30 Nov
'05
10:08 a.m.
Cameron Kaiser wrote:
Neither really. The original Mac sound hardware had
four *synthesis* voices,
Actually, according to the articles you provided, the Mac sound hardware
appears to be a simple fixed-rate DAC that plays back exactly 22,200 bytes per
second, and all of those "modes" are just variations on "calc a buffer and
feed
it to the DAC". Knowing that, and how it is programmed, I am now extremely
impressed by Studio Session (it must have mixed 6 digital voices realtime).
I've written "mod" players before but the most I've ever gotten out of
7MHz was
4 voices, and at half that rate. (No doubt the 32-bit registers, and more of
them, are a big help on the mac, but still...)
--
Jim Leonard (trixter at oldskool.org) http://www.oldskool.org/
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